ALEXANDRIA, Va., March 12 -- United States Patent no. 12,249,616, issued on March 11, was assigned to Canon K.K. (Tokyo).

"Photoelectric conversion apparatus, photoelectric conversion system, and movable body" was invented by Junji Iwata (Tokyo), Kazuhiro Morimoto (Kanagawa, Japan), Yu Maehashi (Hokkaido, Japan) and Yoshiyuki Hayashi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A photoelectric conversion apparatus includes a first substrate including a plurality of avalanche photodiodes, a second substrate including a plurality of pixel circuits, and a third substrate including a signal processing circuit, wherein the second substrate and the third substrate are stacked in such a manner that a third...